Electric heating – Metal heating – By arc
Patent
1977-10-31
1980-05-13
Reynolds, B. A.
Electric heating
Metal heating
By arc
21912402, 21912434, B23K 900
Patent
active
042030226
ABSTRACT:
The positioning method disclosed herein is particularly applicable to a plasma arc cutting torch of the type in which tangential swirl is imparted to an ionizable gas through which the arc discharge takes place. The gas flow is initiated while the torch is in a retracted position and the torch is then advanced toward the workpiece. The vortex pressure is sensed and a signal is generated which is responsive to changes in vortex pressure. The advance of the torch is terminated in response to a change in the signal corresponding to the abrupt drop in the vortex pressure caused by attachment of the vortex to the workpiece.
REFERENCES:
patent: 3082314 (1963-03-01), Arata et al.
patent: 3366772 (1968-01-01), Wickham et al.
patent: 3426175 (1969-02-01), Hahne
patent: 3579068 (1971-05-01), Tschang
patent: 3641308 (1972-02-01), Couch, Jr. et al.
patent: 3641810 (1972-02-01), Smirmaul
patent: 3709027 (1973-01-01), Beeken
patent: 3712318 (1973-01-01), Kopera
patent: 3819840 (1974-06-01), Schultz
patent: 3881357 (1975-05-01), Sahlin
H. A. Khoury, "Non Contact Displacement Feedback Transducer," IBM Tech. Disc. Bulletin, vol. 13, #3, 8/1970, p. 766.
Bailey William V.
Couch, Jr. Richard W.
Hypertherm, Incorporated
Reynolds B. A.
Shaw Clifford C.
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